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615 Colby Ct, Walnut Creek, CA 94598 Property Records

Contra Costa County property record for 615 Colby Ct, Walnut Creek, CA 94598

Property Summary

Property TypeSingle Family Home
Details3 bd · 2.5 ba · 1,839 sqft · built 1976
Lot Size0.096 acres (4,200 sqft)
Owner2 Company Names on File
Last Sale$910,000 (Mar 2018)
Tax Bill$12,303 (2025)
Deeds & MortgagesSep 2021 Mortgage
Jul 2020 Mortgage
+ 1 more
Flood ZoneZone X (minimal risk)
APN135-202-004-2

Property Details

APN / Parcel Number

Primary APN135-202-004-2
Alternative APN
  • 135-202-004

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms8 Rooms
Stories2 Stories
Building Area1,839 sqft Living Area
1st Floor Area946 sqft
2nd Floor Area893 sqft

Exterior

Year BuiltBuilt 1976
Effective Year BuiltEffective 1977
Architectural StyleCluster
Lot Area4,200 sqft (0.096 acres)
Garage TypeAttached
Garage Area460 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address615 COLBY CT
CityWALNUT CREEK
StateCA
Zip94598-4012
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodePD
Legal DescriptionTRACT 4485 LOT 28
Legal SubdivisionWALNUT GREEN 01
Legal Tract4485
Legal Lot Number28
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2006
Census Tract355302

Owner

Source: Contra Costa County records · APN 135-202-004-2

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Company Names on File
Mailing Address615 COLBY CT, WALNUT CREEK, CA 94598-4012
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Sep 14, 2021Deed of Trust, Mortgage · Conventional Mortgage
GUARANTEED RATE INC
Jul 06, 2020Deed of Trust, Mortgage · Conventional Mortgage
OWNING CORPORATION
Mar 15, 2018Grant Deed, Transfer · Conventional Mortgage
HOMEBRIDGE FINANCIAL SERVICES INC

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleMar 15, 2018 · Amount on Record
Deed SaleMar 15, 2018 · Amount on Record
Deed Document Number201840273
Prior Transfer DateJun 29, 2006
Prior Transfer Doc0000214194
Record UpdatedSep 20, 2026

September 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address615 COLBY CT, WALNUT CREEK, CA 94598-4012
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyORANGE COAST TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address615 COLBY CT, WALNUT CREEK, CA 94598-4012

Mortgage

Document Number0000255052
DateSep 14, 2021
Instrument2021-255052
Lender
NameGUARANTEED RATE INC
TypeMortgage Company
AddressCHICAGO, IL 60613
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueOct 01, 2051

July 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address615 COLBY CT, WALNUT CREEK, CA 94598-4012
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyORANGE COAST TITLE SAN JOSE

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000132677
DateJul 06, 2020
Instrument2020-132677
Lender
NameOWNING CORPORATION
TypeNon-Lending Institution
AddressORANGE, CA 92868
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueJul 01, 2050

March 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 15, 2018
Property Address615 COLBY CT, WALNUT CREEK, CA 94598-4012
Document Number0000040273
Map ReferenceMB 166 PG 6-10
Instrument DateMar 12, 2018
Instrument2018-040273
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipLiving Trust
Address615 COLBY CT, WALNUT CREEK, CA 94598-4012

Mortgage

Document Number0000040274
DateMar 15, 2018
Instrument2018-040274
Lender
NameHOMEBRIDGE FINANCIAL SERVICES INC
TypeFunding / Finance Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueApr 01, 2048

Mortgage

Document Number0000040274
DateMar 15, 2018
Instrument2018-040274
Lender
NameHOMEBRIDGE FINANCIAL SERVICES INC
TypeFunding / Finance Company
AddressISELIN, NJ 08830
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueApr 01, 2048

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityWalnut Creek City
Unified School DistrictMount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes and is not a market price estimate.

YearTax BillAssessed Value
2026$1,056,128 (+2%) Land $690,547 Building $365,581
2025$12,303.00 (+4.02%)$1,035,420 (+4.04%) Land $677,007 Building $358,413
2023$11,827.00 (+0.87%)$995,216 Land $650,719 Building $344,497
2022$11,725.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Wildfire

Wildfire RiskModerate
above 46% of the US · lower than 72% of California
Wildfire Likelihood0.08% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

Values are read at the parcel center point; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Radiate Holdings
Cable		1,500 / 50
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
AT&T
DSL		100 / 20

May also be available: Sonic Telecom, T-Mobile USA.

Based on FCC filings for 484 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA0710003, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water SystemCONTRA COSTA WATER DISTRICT
serves 210,500 people
Water SourceSurface water
Last State InspectionJan 2022
LeadUnder 1 ppb (2026–2028)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.

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